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https://issues.apache.org/jira/browse/HADOOP-9431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13611446#comment-13611446
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Arpit Agarwal commented on HADOOP-9431:
---------------------------------------
Sorry, you just pointed out that it is.
+1
> TestSecurityUtil#testLocalHostNameForNullOrWild on systems where hostname
> contains capital letters
> --------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9431
> URL: https://issues.apache.org/jira/browse/HADOOP-9431
> Project: Hadoop Common
> Issue Type: Bug
> Components: security, test
> Affects Versions: 3.0.0
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Trivial
> Attachments: HADOOP-9431.1.patch
>
>
> {{TestSecurityUtil#testLocalHostNameForNullOrWild}} contains assertions about
> the principal returned for a null or wildcard hostname. The logic in
> {{SecurityUtil#getServerPrincipal}} converts the local hostname to
> lower-case. The test method does not perform the same conversion though, so
> the test passes on systems with a hostname containing no upper-case letters,
> but it fails if the hostname does contain upper-case letters.
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